Black tea lowers the rate of blood pressure variation: a randomized controlled trial

被引:37
作者
Hodgson, Jonathan M. [1 ]
Croft, Kevin D. [1 ]
Woodman, Richard J. [2 ]
Puddey, Ian B. [1 ]
Fuchs, Dagmar [3 ]
Draijer, Richard [3 ]
Lukoshkova, Elena [4 ]
Head, Geoffrey A. [5 ]
机构
[1] Univ Western Australia, Sch Med & Pharmacol, Perth, WA 6847, Australia
[2] Flinders Univ S Australia, Discipline Gen Practice, Adelaide, SA 5001, Australia
[3] Unilever Res Labs, Vlaardingen, Netherlands
[4] Russian Cardiol Res Ctr, Dept Cardiovasc Regulat, Moscow, Russia
[5] BakerIDI Heart & Diabet Inst, Melbourne, Vic, Australia
基金
英国医学研究理事会;
关键词
TIME RATE; PROGNOSTIC-SIGNIFICANCE; HYPERTENSIVE PATIENTS; ACID METABOLITES; VARIABILITY; RISK; METAANALYSIS; STROKE; GREEN; CONSUMPTION;
D O I
10.3945/ajcn.112.051375
中图分类号
R15 [营养卫生、食品卫生]; TS201 [基础科学];
学科分类号
100403 ;
摘要
Background: Measures of blood pressure variation have been associated with cardiovascular disease and related outcomes. The regular consumption of black tea can lower blood pressure, but its effects on blood pressure variation have yet to be investigated. Objective: We aimed to assess the effects of black tea consumption on the rate of ambulatory blood pressure variation. Design: Men and women (n = 111) with systolic blood pressure between 115 and 150 mm Hg at screening were recruited in a randomized, controlled, double-blind, 6-mo parallel-designed trial designed primarily to assess effects on blood pressure. Participants consumed 3 cups/d of either powdered black tea solids (tea) or a flavonoid-free caffeine-matched beverage (control). The 24-h ambulatory blood pressure level and rate of measurement-to-measurement blood pressure variation were assessed at baseline, day 1, and 3 and 6 mo. Results: Across the 3 time points, tea, compared with the control, resulted in lower rates of systolic (P = 0.0045) and diastolic (P = 0.016) blood pressure variation by similar to 10% during nighttime (2200-0600). These effects, which were immediate at day 1 and sustained over 6 mo, were independent of the level of blood pressure and heart rate. The rate of blood pressure variation was not significantly altered during daytime (0800-2000). Conclusions: These findings indicate that a component of black tea solids, other than caffeine, can influence the rate of blood pressure variation during nighttime. Thus, small dietary changes have the potential to significantly influence the rate of blood pressure variation. This trial was registered at the Australian New Zealand Clinical Trials Registry as ACTR12607000543482. Am J Clin Nutr 2013;97:943-50.
引用
收藏
页码:943 / 950
页数:8
相关论文
共 39 条
[1]   Oral diuretic activity of hot water infusion of Sri Lankan black tea (Camellia sinensis L.) in rats [J].
Abeywickrama, K. R. W. ;
Ratnasooriya, W. D. ;
Amarakoon, A. M. T. .
PHARMACOGNOSY MAGAZINE, 2010, 6 (24) :271-277
[2]   Green and Black Tea Consumption and Risk of Stroke A Meta-Analysis [J].
Arab, Lenore ;
Liu, Weiqing ;
Elashoff, David .
STROKE, 2009, 40 (05) :1786-1792
[3]   Blood pressure variability in obstructive sleep apnea: role of sympathetic nervous activity and effect of continuous positive airway pressure [J].
Bao, XP ;
Nelesen, RA ;
Loredo, JS ;
Dimsdale, JE ;
Ziegler, MG .
BLOOD PRESSURE MONITORING, 2002, 7 (06) :301-307
[4]   A new method for assessing 24-h blood pressure variability after excluding the contribution of nocturnal blood pressure fall [J].
Bilo, Grzegorz ;
Giglio, Alessia ;
Styczkiewicz, Katarzyna ;
Caldara, Gianluca ;
Maronati, Alberto ;
Kawecka-Jaszcz, Kalina ;
Mancia, Giuseppe ;
Parati, Gianfranco .
JOURNAL OF HYPERTENSION, 2007, 25 (10) :2058-2066
[5]   Green tea catechin polyphenols attenuate behavioral and oxidative responses to intermittent hypoxia [J].
Burckhardt, Isabel C. ;
Gozal, David ;
Dayyat, Ehab ;
Cheng, Yu ;
Li, Richard C. ;
Goldbart, Aviv D. ;
Row, Barry W. .
AMERICAN JOURNAL OF RESPIRATORY AND CRITICAL CARE MEDICINE, 2008, 177 (10) :1135-1141
[6]   A new method for assessing variability of 24 h blood pressure and its first application in 1526 elderly men [J].
Duan, Jun-Li ;
Hao, Chang-Ning ;
Lu, Wei ;
Han, Li ;
Pan, Zhi-Hong ;
Gu, Yi ;
Liu, Pei-Jing ;
Tao, Rui ;
Shi, Yi-Qin ;
Du, Ye-Ye .
CLINICAL AND EXPERIMENTAL PHARMACOLOGY AND PHYSIOLOGY, 2009, 36 (11) :1093-1098
[7]   Night Time Blood Pressure Variability Is a Strong Predictor for Cardiovascular Events in Patients With Type 2 Diabetes [J].
Eguchi, Kazuo ;
Ishikawa, Joji ;
Hoshide, Satoshi ;
Pickering, Thomas G. ;
Schwartz, Joseph E. ;
Shimada, Kazuyuki ;
Kario, Kazuomi .
AMERICAN JOURNAL OF HYPERTENSION, 2009, 22 (01) :46-51
[8]   Primary prevention of stroke: blood pressure, lipids, and heart failure [J].
Endres, Matthias ;
Heuschmann, Peter U. ;
Laufs, Ulrich ;
Hakim, Antoine M. .
EUROPEAN HEART JOURNAL, 2011, 32 (05) :545-U156
[9]   Black tea consumption dose-dependently improves flow-mediated dilation in healthy males [J].
Grassi, Davide ;
Mulder, Theo P. J. ;
Draijer, Richard ;
Desideri, Giovambattista ;
Molhuizen, Henri O. F. ;
Ferri, Claudio .
JOURNAL OF HYPERTENSION, 2009, 27 (04) :774-781
[10]   Acute effects of tea on fasting and postprandial vascular function and blood pressure in humans [J].
Hodgson, JM ;
Burke, V ;
Puddey, IB .
JOURNAL OF HYPERTENSION, 2005, 23 (01) :47-54